I had my first gf in 12th grade. I was very jealous but often found I was hard at the same time. I'd know she went to a party without me and I'd be sick with worry but also very aroused. She was religious and wouldn't have sex with me or blow me, but she would let me go down on her. I was deeply in love with her and thought being submissive towards her, including eating her out while fully clothed, was part of romance.
My next gf was way out of my league and very dominant. She took my virginity, but basically relegated me to just eating her out while often mocking my penis size. Eventually I knew she was regularly cheating on me. It made me want to puke but I loved her and tried to pretend it wasn't happening.
One night we went to a big party, and while waiting around for her so we could leave, I fell asleep. I woke up to the sound of loud sex coming from upstairs. Instinctively I knew it was her. I went up stairs and found them in the first room. She was getting fucked by a very masculine athlete.
They saw me come in, and they both thought it was hilarious. She told me to stay and take notes on how to fuck a girl. I went to leave, tears in my eyes, but she yelled at me to stay. So I did.
When they were done, he gave me a pat on the back and said he'd see me around school, and then he left. She spread her legs and told me to go down on her. (they used a condom)
When she was done, she told me she was breaking up with me. I cried and begged for a second chance. She told me I was too pathetic to date. Ever since then I've been into cuckolding.
FUCK MY WIFE!